Railway truck



May 3, 1949.

Filed sept. 11, 1944 D. S. BARROWS RAILWAY TRUCK 4 sheeis-sheet 1 May 3, 1949 l D. s. BARRow I 2,469,323

RAILWAY TRUCK Filed sept. 11, 1944 Y l 4 shets-sheet :s

May 3, 1949. D. s. BARRows 2,469,323

RAILWAY TRUCK Filed sept. 11, 1944 4 sheets-sheet' 4 y l, \1\ i 4 a 47 Fla. 7 SWW I DONALD' 5. BAQRowsf Patented May 3, 1949 RAILWAY TRUCK Donald S. Barrows, Rochester, N. Y., assigner to The Symington-Gould Corporation, Depew, N. Y., a corporation of Maryland Application September 11, 1944, Serial No. 553,623

(Cl. 18S-190) 20 Claims. 1

This invention relates to a railway truck and nore particularly to a brake beam support there- An object of the invention is the provision, in a railway truck, of a brake beam hanger arranged for movement relative to a side frame so as to maintain a brake shoe in a xed position relative to an associated wheel.

Another object of the invention is the provision, in a railway truck in which a side frame moves vertically with respect to a supporting journal box, of a brake hanger bracket arranged for movement to compensate for the movement between the side frame and journal box.

A further object of the invention is to provide in a railway truck, a brake hanger jaw arranged for vertical movement in a direction opposed to a vertical movement of \a side frame relative to a supporting journal box.

A still further object of the invention is to arrange a brake hanger jaw supported by a vertically movable side frame in such a manner so that the brake hanger jaw will approximate in the opposite direction, a vertical movement of the side frame relative to a journal box.

These and other objects of the invention will become apparent from the succeeding description considered together with the accompanying drawings, the latter of which disclose two species embodying the present invention, and wherein:

Figure 1 is a partial vertical sectional and elevational view of a railway truck illustrating a form of the invention.

Figure 2 is a partial horizontal sectional and plan view of the railway truck shown in Figure 1, and being taken approximately along the lines 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is an enlarged cross sectional view taken along the lines 3-3 of Figure 1, looking in the direction of the arrows.

Figure 4 is an enlarged cross sectional view taken along the lines 4--4 of Figure 1, looking in the direction of the arrows.

Figure 5 is a partial vertical sectional and elevational View of a railway truck embodying a second species of the invention.

Figure 6 is a horizontal view of the railway truck shown in Figure 5, and being taken approximately along the lines 6 6 of Figure 5, looking in the direction oi the arrows.

Figure 7 is an enlarged sectional view taken along the line 1-1 of Figure 5, looking in the direction of the arrows.

Figure 8 is an enlarged sectional view taken along the lines 8-8 of Figure 6, looking in the direction of the arrows.

Referring now in detail to Figures 1 to 4 of the drawings, which disclose one embodiment of the invention and wherein like reference characters indicate like parts, the numeral I is employed to designate in a general manner a railway truck, only a portion of which is illustrated. The railway truck comprises a pair of side frames 2 and a usual connecting resiliently supported bolster 3, only a portion of one side frame and a portion oi one end of the bolster being illustrated because the undisclosed portions of the truck are counterparts of the disclosed quarter portion thereof. One end `l of the side frame is provided with downwardly opening jaws 5 within which is a journal box 6 arranged to be carried by a wheel and axle assembly l. Because of the bearings (not shown) between the axle and journal box and housed by the latter to afford a free rotative action of the wheel and axle assembly, the horizontal axis of the assembly does not vary vertically with respect to the journal box, that is to say, the relationship between the horizontal axis of the assembly and the journal box remains constant vertically throughout the entire range of service movements of the truck. Since the wheel of the assembly travels along a rail 8 the vertical relationship between the rail, wheel and axle assembly and journal box also remains at all times constant.

In order to present an easy riding truck capable of service in high speeds, the side frame is resiliently supported by the journal box so that any external impulses imparted to the Wheel and axle assembly will be cushioned and the complete forces will not be imparted to the side frame, bolster and car body. As exemplary of a means for affording a resilient support for the side frame there is provided a deformable resilient element 9 positioned on a roof I0 of the journal box with an inverted U-shaped yoke II straddling the journal box with an upper web portion I2 bearing upon the resilient element. Depending from each end of the yoke web is an arm or hanger element I3 closely associated with a side of the journal box and terminating adjacent its lower limits in a horizontal shelf or seat I4 directed away from the journal box. Mounted upon each shelf or seat is a coil or helical spring I5 arranged to act vertically and having its upper end engaging a downwardly facing ledge I5 formed on the side frame in vertical alignment with the related shelf and its lower end bearing upon the shelf. Accordingly, any load transmitted to the side frame through the bolster end and related springs will pass through the side frame and the helical springs I5 to the hanger element and thus through the resilient element 9 to the journal box and wheel and axle assembly. Thus the side frame extremity is arranged to move vertically relative to the supporting journal box. This ofttimes desirable resilient support for the side frame causes an undesirable feature in a railway truck, particularly when a brake hanger bracket is formed integrally with the side frame.

As will be observed, and as previously stated, the axis of the wheel and axle assembly remains at all times constant with respect to a supporting rail while the side frame is arranged to move vertically with respect thereto. If in the latter considered truck the brake hanger bracket is formed integral with and therefore remains constant with respect to the sideframe, a brake hanger suspended from the bracket will also move vertically with respect to the wheel and axle assembly, resulting in a constant vertical shifting of the brake beam. In a preferred position, the

brake beam, inclusive of a brake head and wheel contacting shoe, is arranged so that the latter will move, during brake release and application, approximately in a path which, when extended, will bisect the axis of the wheel and axle assemibly. This path may be or approximate an inclination of 12 degrees with respect to a horizont-'al plane passing through the axis of the wheel and axle assembly and, as previously stated, radiating from said axis. The brake beam, therefore, should remain constant or substantially so with respect to the wheel and axle assembly so that among numerous other reasons, if the Vtruck is in 1 transit and the brakes are applied, particularly when the side frame vsupporting springs have been compressed, the brake rigging, uponr recoil of the side frame supporting springs, will not be subjected to abnormal stresses.

As exemplary of a means to maintain a bra-ke beam in a substantially constant relation with respect to the axis of the Wheel andV axle assem'- bly, there is provided an adjustable brake beam support designated generall'yby the reference il and comprising a housing I'B-y formed integrally with and 'upstanding from thelyoke web. The housing forming a complete enclosure, but, however, opening longitudinally vo 'f the truck, is posi'- tioned desirably on the vertical axis of the journal box so as to reilect a tru-e, vertical movement between the journal box and lside frame. The side frame, inthe area above the journal box, is provided with 'oppositely and. transversely' spaced bosses i9 and lila formedin the4 outer 'and inner side flanges 20 and Zuhrespectively of the compression member 2l. IThe outer boss i3 is provided with a. ioun'd'apert'ur'e 22` while the inner boss 59a has a round opening 23 of less diameter than the aperture. However, both the aperture and opening have 'a common axi s. Bisecting theV compression member i's shaft 24' having a collar outer extremity 2a? journaled `in the outer boss and spaced longitudinally therefrom is a reduced neck 2t journaled in the inner boss. By reason of this stepped arrangem'entL in the shaft the latter is prevented from 'shifting inwardly of the truck from its illustrated 'or normal position. A U-shaped strap 27 is formed` integrally with the outer flange 'of the compression member and is provided with a circular opening. 21a in axial alignment with and of the same diameter as the aperture 2'2 so that the shaft, during assembly, may be threaded through the circular opening into the side frame. Aclip 23'having upturne'd ends is disposed between the strap and `outer flange of the compression member `to 'form a barrier against or arrest 'an unwarranted oraccidental displacement offthershaftand thereby :retain it in operable position'. 'The shaft between the neck and collar is formed square in cross section as at` Y3i! with thev corners preferably rounded `so that the intermediate section 30 may be considered as being inscribed within the-circular dimensions of: the collar.A This,- therefore,

Clo'

tra

lLing directed transversely ofthe truck.

will permit the shaft to be inserted into the side frame. Associated with the shaft is an arm 3| having a hub 32 cored to neatly accommodate the intermediate portion of the shaft so as to pivot the shaft about its axis. The arm extends normally horizontally from the shaft to terminate in a cylindrical or drum-shaped extremity 33 disposed Within the housing and. having its axis coincide with the vertical axis of the journal box. A resilient element, means or leaf spring 34 is interlocked with the housing to bear vertically against the cylindrical arm extremity and maintain the latter in bearing relation with the housing; The leaf spring functions as an antirattling device as well as preventing lost motion between the" arm and housing. `From the above it will be noted that any vertical movement of the' side frame relative to the journal box will be re ilected in a pivotal movement of the shaft.

The shaft, inwardly of the truck beyond the neck, is again formed of square cross section as at 35 with this squared vsection being of such pro'- portions as to pass through the round opening 2-3 and facilitate assembly of the shaft with the side traine. Instanding of the truck horizontally from the inner compression lmember flangel isfarr L-snaped auxiliary bracket 361 presenting ana'pertured. leg 31 parallel with but spaced inwardly from the compression member. An inner extremity 38 of the shaft occupiesv the aperture of the auxiliary bracket leg and this-arrangement forms not only an` innermost support for the shaft but defines "anr area 39 between the bracket leg and compression member. Confined withir'iA A. the area 39 is a butt 'All of a lever '4l suitably cored to vaccomr'nod'ate neatly the shaft .squared section- 35 so that any rotative lmovementv of 'the shaft will be transmitted 'immediately to 'the lever. The lever extendsfrom the shaft inaninclined vere tical direction to terminate in a jaw 182.

Extending inwardly of the truck from a `column 413. thereof which defines one side of a bolster accommodating opening M, is abracket Vlili" prefierably lformed integral with the 'column and be- The` bracket 415 is desirablyv Lil-shaped in transverse elevation and as such comprises an outer'aperturedv base 46 and a lower connecting horizontal bar M'wh-ich terminates at its 'ffree or inner ex- I tremity in an upwardly directed or apertured vertical `bearing 48. The ll'iorizon-tal bar' is desirably of inverted U-shape 'in vertical cross section to rigidify the bracket against stresses to which it will befsubj'ecte'cl -in service, Extending through horizontally aligned apertures in 'the base and bearing is afrodorstub'axle `l49 'prevented from shifting 'outwardly of the truck by the compression member i'nn'e'r flange-and inwardly of the truck by an arresting removableclip 50 in'- terlock'ed with the vertical bearing. Pivotally mounted'on tli'estub 'axle be'tween'the bracket base and bearing isa movable means 5'! larranged to carry a brake hangeri'and Ibrake beam assembly 52; The `movable means is desirably formed as a unitary element comprising a tubular shank E53 neatly accommodating the stub axle `and having extending from the compression member adjacent 'extremity an integral lever 54 directed'vertically at an inclination correspondng'to 'the inclination of` the lever 4I; That is to say, the axis of the lever '54 is preferably, parallel to the axis of the lever. 4| vso that the levers .point yin the same direction and any-rotative movement of the shaft will bereilectedfin: -a.-.corresponding rotative kmovementV of the tubular shank. The

free extremity of the lever 54 is formed as an open jaw 55 preferably in longitudinal alignment with the lever jaw 42 with both jaws pivotally connected by a rod, rigid tie or link 56, the latter of which is in parallel relation with and positioned inwardly of the truck from and adjacent to the compression member. Extending horizontally from and formed integral with the tubular shank is a hanger jaw or U-shaped hanger support 51 directed toward the associated extremity of the side frame. The hanger support has its free extremity formed by spaced upper and lower iingers 58 defining a recess 59 therebetween so that the hanger of the hanger and brake beam assembly may be positioned in the recess to suspend the assembly from the unitary element or movable means 5 I. Vertically aligned apertures 60 are formed in the hanger jaw fingers for the reception of a bolt means to prevent an accidental displacement of the hanger and brake beam assembly.

Because of the particular arrangement and disposition of the various components above described it will be noted that as the side frame moves'downwardly relative to the journal box, the shaft and stub axle will be carried downwardly a corresponding distance. However, this movement will result in a rotative movement in a clockwise direction being imparted to the shaft to be reflected in a corresponding rotative movement of the tubular shank. These movements, therefore, will result in the hanger jaw being raised an amount corresponding to the downward movement of the side frame to thereby maintain the brake hanger and brake beam assembly in an adequately supported fixed position relative to the wheel and axle assembly. In other words, the arrangement of components is such that a movement of the side frame in one direction will be reflected in a corresponding or like movement of the brake hanger jaw in an opposite direction.

Referring now in detail to Figures 5 through 8 of the drawings which disclose a modiiied form of the invention, a railway truck la (only a portion of which is shown) comprises a side frame 2a and the usual bolster or load carrying member 3a. The journal box 6a and journal box mounting 9a and |5a are substantially the same in the design under immediate consideration as to corresponding structure or components of the previously described design excepting that a spring seat or shelf Ma of a hanger element I3a is provided with a depending lug or housing I8a formed in part by a clip like member 62 apertured to receive a horizontal transversely extending retaining pin or key 63 which is parallel with and spaced below the related shelf. The key has an L-shaped head 64 formed on one end thereof and which is disposed within the channel-like clip to be removably secured therein by any means such as the pin 65 insertible through aligned openings. Disposed oppositely or inwardly of the truck from the clip is a boss or jaw 66 apertured so as to be bisected by the free extremity of the key for the purpose to be hereinafter pointed out.

As will become hereinafter apparent, the clip and lower jaw may be formed integral with a lower extremity of the journal box in the absence of a yoke I la in the truck structure but, however, the side frame still being resiliently supported from a journal box 6a. wherein the shelves are made integral with the journal box or wherein a coil or other spring is interposed between the top of the journal box and overlying portion of` the side frame. In this latter instance the clip and lower jaw, and possibly only the lower jaw, may be formed as a part of the journal box just as long as it is arranged to move vertically with the journal box or reflect any vertical action thereof.

Projecting inwardly of the truck from preferably an upper extremity of a column 43a of the side frame is a bracket 45a of substantially U conguration in transverse elevation and comprising a boss 46a, having extending therefrom a lower connecting bar 41a terminating in an apertured upstanding bearing 48a. Bridging the space between the boss and bearing in upper spaced relation to the connecting bar is a stub axle 49 disposed within the apertures of the boss and bearing and retained in operable position by a removable retaining means 50a. Pivotally associated with the stub axle intermediate the ends thereof is a movable means 5 l a arranged to carry a brake hanger and brake beam assembly 52a. The movable means comprises a tubular shank 53a sleeved over the stub axle and arranged to pivot relatively thereto. Outstanding from one or the side frame adjacent extremity of the tubular member is an integral upper jaw type lever 54a directed at an upwardly inclined direction toward the associated extremity of the side frame. A jaw 55a of the lever opens downwardly towards the upper jaw 66 and both jaws are pivotally connected by a rod, rigid tie or link 56a, the latter of which extends diagonally from adjacent the lower extremity of the journal box upwardly toward the upper extremity of a related column. The link is disposed parallel to the side frame inwardly therefrom in the present illustration. However, in the case of an inboard truck the link will be disposed outwardly of the side frame with its connected components transposed accordingly.

Extending horizontally from and formed integral with the tubular shank is a hanger jaw or U-shaped hanger support 51a directed away from the shank toward a related end of the side frame.

the tubular shank will, through the medium of the tie, be rotated in a clockwise direction to alter the relationship between the jaw 51a and the side frame and thereby maintain the brake' beam assembly in a xed position relative to the wheel and axle assembly.

From the above it will be noted that various changes and alterations may be made to the illustrated and described constructions without departing from within the spirit and scope of the appended claims.

I claim:

1. In a railway truck having a resiliently mounted side frame carried by a journal box and a wheel of a wheel and axle assembly, the combination of, a bracket carried by the side frame, a brake hanger jaw pivoted directly to and movable with respect to said bracket, said brake hanger jaw being in alignment with said wheel for supporting a brake beam and actuating means for pivoting said brake hanger jaw in one andi ai related wheel; the4 combination of, movable ansiosa 7 direction when the sidev fra-me moves relative to the` journal vbox inthe opposite direction for main= taining a constant relationship between said brake beam and wheel.

2. In a railway truck having a resi-liently mounted side trame carried byajournalbox and a wheel .of a wheel and axle assembly, rthe combination of, means pivotally mounted directly on a column of said side frameand including fa brake hanger jaw, said brake hanger jawibeing in` alignment with said Wheel forr supportinga brake shoe, means movably connected .to'said journal box, and means connecting both of said means so that movement :between said jour-naly box and side frame will be reflected in said-jaw for main-taining a constant relationshiplbetweensaidbrake shoe and wheel.

3..InY a railway truck having a resi-lientl'y mounted side frame carriedby ajournal box anda wheel or a wheel and :axle assembly, thecombination of, means carried by Aandarranged to; move relative to a' column ofi said side-frame, saidff-means comprising a brake-hanger jaw in substantial radial alignmentfwithv said wheel' for supporti-ng a -brakeshoe, movable means conik necteditosaidjournal box, `and connecting means extending between said rlrsttvvo namedmean-s; all of said means being so arranged and constructedvk that a movement fof the side framein direction will be reflected in an equal move-4 ment of. said jaw i-n the opposite :direction for maintaining a substantially constant relationshipbetween said brakef shoe and zwheel.

v4.*A In a railway truck having a' side frame vertically movable with respect-,to a related joursL nal box and wheel, the combination of, pivotall means instanding from! 1a' col'u'nan-,ofv'saidrside frame, means including a brake hanger jaw mounted ony said-pivotal means, said brake 'hanger jaw beingA in substantiall alignment with saidwheel` for supporting a brake beam, means connected tosaid journal box, andY means connecting said last two named meanssothat arelative vertical` movement between saidijournal boxand side frame will vbereflected inA saidr jaw for maintain; ing a constant'relationship between said-'brakeE beam a-ndwheel.

5.*I'n a. railway truck having va resiliently mounted side frame carried by ai jourri-a/lbox'and'v a--related wheel, the combination of,-`sUppo`i-t means extendingy inwardly of "said truck' from ai side.v frame col-umn,I .movablefmeans mounted on,v saidsupport means including a brake-:hanger jawior carrying a brake beam, and' means conl-n nectingzsaidj ournalv box andimovable means; both? of. saidk last named means beingI so-arrangeal1-and'- constructed that verticalmovement of said side*` frame' relative to; said journal box in# onedirec: i tion.- will be reflected: .in said? jaw inlan opposite' direction for maintaining asubstantia-llyconstantrelationshipibetween saidbrake/beam and wheel.

6. In a railway truck f having` a resiliently mounted side framel carried bya journal? Zb'ox-` means supported from a guide .coluinfnoorsaidi side frame inwardly of said truck, said- I'means including'V a brake hanger' jaw arranged to `carry al brake beam, and'v means connecting a movable' element of said truck' and said movable means', all of said means being sov arranged and constructedA that movement vor said; 'side frame 'rela'- tive tosaid journal box' in one direction' will be approximatedrby a movement ofi said ja'v'v ini the" opposite `direction for maintaininga substantially constant relationship between said brake beam and wheel.

'7i 'In a `railway 'truck having a fresiliently mounted side frame carried by a journal box and a related wheel,y thecombination of, an arrange; ment forv maintaining a constant relationship between a brake beam and said wheel comprising a bracket extending inwardlyy of said truck from aguide column of` said side frame, means come` prising a'brakehanger jaw pivotally mounted on said bracket, said brake hanger jaw being adapted to support said brake beam, means pivotally mounted on `said side frame removed fromV said rst named means, connecting means joining said first and second named means, and means connecting said journal box yand secondI named means.

8..In a railway truck having a resiliently mounted side frame carried by a journal box and a related wheel, the combination of, an are rangement for maintaining a constant relation'- ship between a brake beam and said wheel com pri'sing abracket formed integrally with the column of said side frame pivot meanscarried byv said bracket, lever means mounted Von said pivot means, a brake'hanger jaw movable with rsaid lever means, said brak'ehanger jaw being adapted to support said brake beam, a lever ar' rangement connected to said journal box and pivotally mounted on said side frame at a loca;

tion removed from said bracket, and link means connecting said lever means `and lever arrange; ment.

9. In a railway truck `having ,a resiliently mounted side frame carried by a journal box anda wheel, the combination of, an' -arrangement for maintaining a constant relationship between ay brake beamv and said wheel comprising a lever means arranged to pivot about a horizontal axisand carriedv by saidV side frame, a brake hanger' jaw formed integrally with said lever means, said brake hanger jaw being adapted to support said brake beam, a lever arrangement pivotal about a'horizon'tal axis and connected to said journal box, and link means connecting said lever means and lever arrangement.

10. In a railway truck having a resiliently mounted sside `frame carried by a journal box and a wheel, the'combina-tiorr of, an arrangement for maintaining a constant relationship between a brake beam and said wheel comprising a lever means arranged to pivot about a horizontal axis and carried by'said side frame, said lever means comprising a horizontally directed brake hanger jaw and: a vertically directed arm, said brake hanger .jaw being adapted to support said brakel beam, a lever arrangement pivotal about a horizontalaxis andi connected to said journal box, and link means connecting said lever arrangementand arm.

111. In va railway truck having a resiliently' mounted side frame carried'by a journal box and a wheel, the combination of, a lever means ar'- so thatxmovement oi'said--horizontalmeans will be reflected vina movement of `said .ja-W. to maintain a substantially constant relationship between said brake beam and wheel.

12. In a railway truck having a resiliently mounted side frame carried by a journal box and a wheel, the combination of, an arrangement for maintaining a constant relationship between a brake beam and said wheel comprising a lever means arranged to pivot about a horizontal axis and carried by said side frame, said lever means comprising a horizontally directed brake hanger jaw and a vertically directed arm, said brake hanger jaw being adapted to support said brake beam, a shaft pivotal with respect to and carried by said side frame, horizontalmeans secured to said shaft and arranged to pivot said shaft upon movement between said side frame and journal box, vertically disposed means secured to said shaft, and means connecting said vertically disposed means and arm.

13. In a railway truck having a resiliently mounted side frame carried by a journal box and a wheel, the combination of, a bracket formed integrally with a column of a side frame and extending inwardly of the truck therefrom, a pivot pin carried by said bracket, means carried by said pivot pin and arranged to move relatively to said bracket, a jaw facing toward an end of said side frame and formed in said means for supporting a brake beam, and means connecting said journal box and first named means so that a movement of said side frame relative to said journal box in one direction will be reflected in a movement of said jaw in the opposite direction for maintaining a constant relationship between said brake beam and wheel.

14. In a railway truck having a resiliently mounted side frame carried by a journal box and a wheel, the combination of, a bracket formed integrally with a column of a Side frame and extending inwardly of the truck therefrom, pivot 4 means carried by said bracket, means comprising a brake hanger jaw carried by and arranged to move about the axis of said pivot means for supporting a brake shoe, means arranged to move vertically relative to said truck upon an application of a load to said truck, and means connecting said vertically movable means to said pivot carried means so as to move said jaw about said pivot means for maintaining a constant relation-- ship between said brake shoe and wheel.

15. In a railway truck having a resiliently mounted side frame carried by a journal box and a wheel, the combination of, a bracket formed integrally with a column of a side frame and extending inwardly of the truck therefrom, a pivot pin carried by said bracket, means carried by said pivot pin and arranged to move relatively to said bracket, `a jaw facing toward said journal box and in said rst named means, said jaw supporting a brake shoe, means carried by said side frame adjacent said journal box and slidably connected to said journal box adjacent the vertical axis thereof, and link means pivotally connecting said first named and last named means for maintaining a constant relationship between said brake shoe and wheel.

16. In a railway truck having a side frame resiliently supported by a journal box and a wheel, the combination of, means carried by and arranged to move relative to said side frame, said means including a brake hanger jaw for supporting a brake beam, pivot means associated with said journal box adjacent the lower extremity thereof, and diagonally disposed means connected to said pivot means and brake hanger jaw so that a movement of said side frame in one direction will be reflected in said brake hanger jaw in an opposite direction for maintaining a substantially constant relationship between said brake beam and wheel.

17. In a railway truck having a side frame resiliently supported by a journal box and a wheel, the combination of, means carried by and arranged to move relatively to said side frame, said means comprising a support for a brake beam, means spaced below said first named means and being associated with said journal box, and inclined means extending from said journal box associated means upwardly toward said support for rotating the latter in response to a vertical movement of said side frame relative to said journal box for maintaining a substantially constant relationship between said brake beam and wheel.

18. In a railway truck having a side frame resiliently supported by a journal box and a wheel, the combination of, movable means carried by and adjacent to a top of said side frame intermediate the ends thereof and comprising a support for a brake beam, means associated with said journal box and being spaced horizontally from and below said first named means, and rigid means connecting both of said means so as to move said support relative to said side frame during a vertical movement of the latter for maintaining a substantially constant relationship between said brake beam and wheel.

19. In a railway truck having a side frame resiliently supported by a journal box and a wheel, the combination of, movable means carried by and adjacent to a top of said side frame intermediate the ends thereof and comprising a support for a brake beam, means associated with said journal box and being spaced horizontally from and below said rst named means, and a link pivotally connected to both of said means so as to move said support relative to said side frame during a vertical movement of the latter relative to said journal box for maintaining a substantially constant relationship between said brake beam and wheel.

20. In a railway truck having a side frame resiliently supported by a journal box and a wheel, the combination of a bracket integral with a column of said side frame and extending horizontally therefrom, means pivotally mounted on said bracket and including a support for a brake beam, means associated with a lower extremity of said journal box, and rigid means pivotally connected to both of said means so as to move said support relative to said bracket during a vertical movement of said side frame relative to said journal box for maintaining a substantially constant relationship between said brake beam and wheel.

DONALD S. BARROWS.

REFERENCES CITED The following references are of record in the le of lthis patent:

UNITED STATES' PATENTS Number Name Date 2,159,814 McCune May 23, 1939 2,211,915 Stewart Aug. 20, 1940 2,211,916 Farmer Aug. 20, 1940 

